The wall has not been accurately date but may date from the 8th century. its original purpose is unknown, but it was probably a defensive work or possibly a game reserve.
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Evidence of human activity near the wall included a detritus of smooth post glacial rocks and the excavations did discover the body of a warrior as there were traces of lamellar armour surrounding the corpse. No DNA testing was, however carried out and the remains were returned to the grave.
Source: "The Amur River; between Russia and China" by Colin Thubron (ISBN: 878-1-529-11089-0)